Cytokinin functions as an asymmetric and anti-gravitropic signal in lateral roots

Waidmann, Sascha and Ruiz Rosquete, Michel and Schoeller, Maria and Sarkel, Elizabeth and Lindner, Heike and LaRue, Therese and Petrik, Ivan and Duenser, Kai and Martopawiro, Shanice and Sasidharan, Rashmi and Novak, Ondrej and Wabnik, Krzysztof and Dinneny, Jose R. and Kleine-Vehn, Juergen (2019). Cytokinin functions as an asymmetric and anti-gravitropic signal in lateral roots. "Nature Communications", v. 10 ; p. 3540. ISSN 2041-1723. https://doi.org/10.1038/s41467-019-11483-4.

Description

Title: Cytokinin functions as an asymmetric and anti-gravitropic signal in lateral roots
Author/s:
  • Waidmann, Sascha
  • Ruiz Rosquete, Michel
  • Schoeller, Maria
  • Sarkel, Elizabeth
  • Lindner, Heike
  • LaRue, Therese
  • Petrik, Ivan
  • Duenser, Kai
  • Martopawiro, Shanice
  • Sasidharan, Rashmi
  • Novak, Ondrej
  • Wabnik, Krzysztof
  • Dinneny, Jose R.
  • Kleine-Vehn, Juergen
Item Type: Article
Título de Revista/Publicación: Nature Communications
Date: 2019
ISSN: 2041-1723
Volume: 10
Subjects:
Faculty: Centro de Investigación en Biotecnología y Genómica de Plantas (CBGP) (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Directional organ growth allows the plant root system to strategically cover its surroundings. Intercellular auxin transport is aligned with the gravity vector in the primary root tips, facilitating downward organ bending at the lower rootflank. Here we show that cytokinin signaling functions as a lateral root specific anti-gravitropic component, promoting the radial distribution of the root system. We performed a genome-wide association study and reveal that signal peptide processing of Cytokinin Oxidase 2 (CKX2) affects its enzymatic activity and, thereby, determines the degradation of cytokinins in naturalArabidopsis thaliana accessions. Cytokinin signaling interferes with growth at the upper lateral rootflank and thereby prevents downward bending. Our interdisciplinary approach proposes that two phytohormonal cues at opposite organflanks counterbalance each other’s negative impact on growth, suppressing organ growth towards gravity and allow for radial expansion of the root system.

Funding Projects

TypeCodeAcronymLeaderTitle
Madrid Regional Government2017-T1/BIO-5654UnspecifiedUnspecifiedUnspecified
Horizon 2020639478AuxinERUNIVERSITAET FUER BODENKULTUR WIENMechanisms of Auxin-dependent Signaling in the Endoplasmic Reticulum

More information

Item ID: 64020
DC Identifier: http://oa.upm.es/64020/
OAI Identifier: oai:oa.upm.es:64020
DOI: 10.1038/s41467-019-11483-4
Official URL: https://www.nature.com/articles/s41467-019-11483-4
Deposited by: Memoria Investigacion
Deposited on: 22 Dec 2020 07:53
Last Modified: 22 Dec 2020 07:53
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